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lglaf.py: fix default read timeout

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Really apply default read timeout (5 seconds) even if Communication.read
passes None.
This commit is contained in:
Peter Wu 2016-01-03 22:46:15 +01:00
parent 6c1f8e78c9
commit 7ef3448209
1 changed files with 3 additions and 1 deletions
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4
lglaf.py
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@ -230,7 +230,9 @@ class USBCommunication(Communication):
def _match_configuration(self, config):
return usb.util.find_descriptor(config,
custom_match=self._match_interface)
def _read(self, n, timeout=READ_TIMEOUT_MS):
def _read(self, n, timeout=None):
if timeout is None:
timeout = self.READ_TIMEOUT_MS
# device seems to use 16 KiB buffers.
array = self.usbdev.read(self.EP_IN, 2**14, timeout=timeout)
try: return array.tobytes()